521134344 has 128 divisors (see below), whose sum is σ = 1498780800. Its totient is φ = 167650560.

The previous prime is 521134333. The next prime is 521134349. The reversal of 521134344 is 443431125.

It is a happy number.

521134344 is a `hidden beast` number, since 521 + 134 + 3 + 4 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (521134349) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1574259 + ... + 1574589.

It is an arithmetic number, because the mean of its divisors is an integer number (11709225).

Almost surely, 2^521134344 is an apocalyptic number.

521134344 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 521134344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (749390400).

521134344 is an abundant number, since it is smaller than the sum of its proper divisors (977646456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

521134344 is a wasteful number, since it uses less digits than its factorization.

521134344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580 (or 570 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 521134344 is about 22828.3670900921. The cubic root of 521134344 is about 804.7294560427.

Adding to 521134344 its reverse (443431125), we get a palindrome (964565469).

The spelling of 521134344 in words is "five hundred twenty-one million, one hundred thirty-four thousand, three hundred forty-four".